1 files changed, 387 insertions, 0 deletions
diff --git a/toolkit/content/tests/widgets/test_popupanchor.xhtml b/toolkit/content/tests/widgets/test_popupanchor.xhtml
new file mode 100644
index 0000000000..5c78cf62fc
--- /dev/null
+++ b/toolkit/content/tests/widgets/test_popupanchor.xhtml
@@ -0,0 +1,387 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css" type="text/css"?>
+
+<window title="Popup Anchor Tests"
+  xmlns:html="http://www.w3.org/1999/xhtml"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <panel id="testPanel"
+         type="arrow"
+         animate="false"
+         noautohide="true">
+  </panel>
+
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+
+<script>
+<![CDATA[
+var anchor, panel;
+
+function is_close(got, exp, msg) {
+  // on some platforms we see differences of a fraction of a pixel - so
+  // allow any difference of < 1 pixels as being OK.
+  ok(Math.abs(got - exp) < 1, msg + ": " + got + " should be equal(-ish) to " + exp);
+}
+
+function margins(popup) {
+  let ret = {};
+  let cs = getComputedStyle(popup);
+  for (let side of ["top", "right", "bottom", "left"]) {
+    ret[side] = parseFloat(cs.getPropertyValue("margin-" + side));
+  }
+  return ret;
+}
+
+function checkPositionRelativeToAnchor(side) {
+  var panelRect = panel.getBoundingClientRect();
+  var anchorRect = anchor.getBoundingClientRect();
+  switch (side) {
+    case "left":
+    case "right":
+      is_close(panelRect.top - margins(panel).top, anchorRect.bottom, "top of panel should be at bottom of anchor");
+      break;
+    case "top":
+    case "bottom":
+      is_close(panelRect.right + margins(panel).left, anchorRect.left, "right of panel should be left of anchor");
+      break;
+    default:
+      ok(false, "unknown side " + side);
+      break;
+  }
+}
+
+function openSlidingPopup(position, callback) {
+  panel.setAttribute("flip", "slide");
+  _openPopup(position, callback);
+}
+
+function openPopup(position, callback) {
+  panel.setAttribute("flip", "both");
+  _openPopup(position, callback);
+}
+
+async function waitForPopupPositioned(actionFn, callback)
+{
+  info("waitForPopupPositioned");
+  let a = new Promise(resolve => {
+    panel.addEventListener("popuppositioned", () => resolve(true), { once: true });
+  });
+
+  actionFn();
+
+  // Ensure we get at least one event, but we might get more than one, so wait for them as needed.
+  //
+  // The double-raf ensures layout runs once. setTimeout is needed because that's how popuppositioned is scheduled.
+  let b = new Promise(resolve => {
+    requestAnimationFrame(() => requestAnimationFrame(() => {
+      setTimeout(() => resolve(false), 0);
+    }));
+  });
+
+  let gotEvent = await Promise.race([a, b]);
+  info("got event: " + gotEvent);
+  if (gotEvent) {
+    waitForPopupPositioned(() => {}, callback);
+  } else {
+    SimpleTest.executeSoon(callback);
+  }
+}
+
+function _openPopup(position, callback) {
+  panel.setAttribute("side", "noside");
+  panel.addEventListener("popupshown", callback, {once: true});
+  panel.openPopup(anchor, position);
+}
+
+var tests = [
+  // A panel with the anchor after_end - the anchor should not move on resize
+  ['simpleResizeHorizontal', 'middle', function(next) {
+    openPopup("after_end", function() {
+      checkPositionRelativeToAnchor("right");
+      var origPanelRect = panel.getBoundingClientRect();
+      panel.sizeTo(100, 100);
+      checkPositionRelativeToAnchor("right"); // should not have flipped, so still "right"
+      panel.sizeTo(origPanelRect.width, origPanelRect.height);
+      checkPositionRelativeToAnchor("right"); // should not have flipped, so still "right"
+      next();
+    });
+  }],
+
+  ['simpleResizeVertical', 'middle', function(next) {
+    openPopup("start_after", function() {
+      checkPositionRelativeToAnchor("bottom");
+      var origPanelRect = panel.getBoundingClientRect();
+      panel.sizeTo(100, 100);
+      checkPositionRelativeToAnchor("bottom"); // should not have flipped.
+      panel.sizeTo(origPanelRect.width, origPanelRect.height);
+      checkPositionRelativeToAnchor("bottom"); // should not have flipped.
+      next();
+    });
+  }],
+  ['flippingResizeHorizontal', 'middle', function(next) {
+    openPopup("after_end", function() {
+      checkPositionRelativeToAnchor("right");
+      waitForPopupPositioned(
+        () => { panel.sizeTo(anchor.getBoundingClientRect().left + 50, 50); },
+        () => {
+          checkPositionRelativeToAnchor("left"); // check it flipped.
+          next();
+        });
+    });
+  }],
+  ['flippingResizeVertical', 'middle', function(next) {
+    openPopup("start_after", function() {
+      checkPositionRelativeToAnchor("bottom");
+      waitForPopupPositioned(
+        () => { panel.sizeTo(50, anchor.getBoundingClientRect().top + 50); },
+        () => {
+          checkPositionRelativeToAnchor("top"); // check it flipped.
+          next();
+        });
+    });
+  }],
+
+  ['simpleMoveToAnchorHorizontal', 'middle', function(next) {
+    openPopup("after_end", function() {
+      checkPositionRelativeToAnchor("right");
+      waitForPopupPositioned(
+       () => { panel.moveToAnchor(anchor, "after_end", 20, 0); },
+       () => {
+         // the anchor and the panel should have moved 20px right without flipping.
+         checkPositionRelativeToAnchor("right");
+         waitForPopupPositioned(
+           () => { panel.moveToAnchor(anchor, "after_end", -20, 0);  },
+           () => {
+             // the anchor and the panel should have moved 20px left without flipping.
+             checkPositionRelativeToAnchor("right");
+             next();
+          });
+       });
+    });
+  }],
+
+  ['simpleMoveToAnchorVertical', 'middle', function(next) {
+    openPopup("start_after", function() {
+      checkPositionRelativeToAnchor("bottom");
+      waitForPopupPositioned(
+       () => { panel.moveToAnchor(anchor, "start_after", 0, 20); },
+       () => {
+         // the anchor and the panel should have moved 20px down without flipping.
+         checkPositionRelativeToAnchor("bottom");
+         waitForPopupPositioned(
+           () => { panel.moveToAnchor(anchor, "start_after", 0, -20) },
+           () => {
+             // the anchor and the panel should have moved 20px up without flipping.
+             checkPositionRelativeToAnchor("bottom");
+             next();
+          });
+       });
+    });
+  }],
+
+  // Do a moveToAnchor that causes the panel to flip horizontally
+  ['flippingMoveToAnchorHorizontal', 'middle', function(next) {
+    var anchorRight = anchor.getBoundingClientRect().right;
+    // Size the panel such that it only just fits from the left-hand side of
+    // the window to the right of the anchor - thus, it will fit when
+    // anchored to the right-hand side of the anchor.
+    panel.sizeTo(anchorRight - 10, 100);
+    openPopup("after_end", function() {
+      checkPositionRelativeToAnchor("right");
+      // Ask for it to be anchored 1/2 way between the left edge of the window
+      // and the anchor right - it can't fit with the panel on the left/arrow
+      // on the right, so it must flip (arrow on the left, panel on the right)
+      var offset = Math.floor(-anchorRight / 2);
+
+      waitForPopupPositioned(
+        () => panel.moveToAnchor(anchor, "after_end", offset, 0),
+        () => {
+          checkPositionRelativeToAnchor("left");
+          // resize back to original and move to a zero offset - it should flip back.
+
+          panel.sizeTo(anchorRight - 10, 100);
+          waitForPopupPositioned(
+            () => panel.moveToAnchor(anchor, "after_end", 0, 0),
+            () => {
+              checkPositionRelativeToAnchor("right"); // should have flipped back.
+              next();
+            });
+        });
+    });
+  }],
+
+  // Do a moveToAnchor that causes the panel to flip vertically
+  ['flippingMoveToAnchorVertical', 'middle', function(next) {
+    var anchorBottom = anchor.getBoundingClientRect().bottom;
+    // See comments above in flippingMoveToAnchorHorizontal, but read
+    // "top/bottom" instead of "left/right"
+    panel.sizeTo(100, anchorBottom - 10);
+    openPopup("start_after", function() {
+      checkPositionRelativeToAnchor("bottom");
+      var offset = Math.floor(-anchorBottom / 2);
+
+      waitForPopupPositioned(
+        () => panel.moveToAnchor(anchor, "start_after", 0, offset),
+        () => {
+          checkPositionRelativeToAnchor("top");
+          panel.sizeTo(100, anchorBottom - 10);
+
+          waitForPopupPositioned(
+            () => panel.moveToAnchor(anchor, "start_after", 0, 0),
+            () => {
+              checkPositionRelativeToAnchor("bottom");
+              next();
+            });
+        });
+    });
+  }],
+
+  ['veryWidePanel-after_end', 'middle', function(next) {
+    openSlidingPopup("after_end", function() {
+      waitForPopupPositioned(
+        () => { panel.sizeTo(window.innerWidth - 10, 60); },
+        () => {
+          is(panel.getBoundingClientRect().width, window.innerWidth - 10, "width is what we requested.")
+          next();
+      });
+    });
+  }],
+
+  ['veryWidePanel-before_start', 'middle', function(next) {
+    openSlidingPopup("before_start", function() {
+      waitForPopupPositioned(
+        () => { panel.sizeTo(window.innerWidth - 10, 60); },
+        () => {
+          is(panel.getBoundingClientRect().width, window.innerWidth - 10, "width is what we requested")
+          next();
+      });
+    });
+  }],
+
+  ['veryTallPanel-start_after', 'middle', function(next) {
+    openSlidingPopup("start_after", function() {
+      waitForPopupPositioned(
+        () => { panel.sizeTo(100, window.innerHeight - 10); },
+        () => {
+          is(panel.getBoundingClientRect().height, window.innerHeight - 10, "height is what we requested.")
+          next();
+        });
+    });
+  }],
+
+  ['veryTallPanel-start_before', 'middle', function(next) {
+    openSlidingPopup("start_before", function() {
+      waitForPopupPositioned(
+        () => { panel.sizeTo(100, window.innerHeight - 10); },
+        () => {
+          is(panel.getBoundingClientRect().height, window.innerHeight - 10, "height is what we requested")
+          next();
+      });
+    });
+  }],
+
+  // Tests against the anchor at the right-hand side of the window
+  ['afterend', 'right', function(next) {
+    openPopup("after_end", function() {
+      // when we request too far to the right/bottom, the panel gets shrunk
+      // and moved.  The amount it is shrunk by is how far it is moved.
+      checkPositionRelativeToAnchor("right");
+      next();
+    });
+  }],
+
+  ['after_start', 'right', function(next) {
+    openPopup("after_start", function() {
+      // See above - we are still too far to the right, but the anchor is
+      // on the other side.
+      checkPositionRelativeToAnchor("right");
+      next();
+    });
+  }],
+
+  // Tests against the anchor at the left-hand side of the window
+  ['after_start', 'left', function(next) {
+    openPopup("after_start", function() {
+      var panelRect = panel.getBoundingClientRect();
+      ok(panelRect.left - margins(panel).left >= 0, "panel remains within the screen");
+      checkPositionRelativeToAnchor("left");
+      next();
+    });
+  }],
+]
+
+function runTests() {
+  function runNextTest() {
+    let result = tests.shift();
+    if (!result) {
+      // out of tests
+      panel.hidePopup();
+      SimpleTest.finish();
+      return;
+    }
+    let [name, anchorPos, test] = result;
+    SimpleTest.info("sub-test " + anchorPos + "." + name + " starting");
+    // first arrange for the anchor to be where the test requires it.
+    panel.hidePopup();
+    panel.sizeTo(100, 50);
+    // hide all the anchors here, then later we make one of them visible.
+    document.getElementById("anchor-left-wrapper").style.display = "none";
+    document.getElementById("anchor-middle-wrapper").style.display = "none";
+    document.getElementById("anchor-right-wrapper").style.display = "none";
+    switch(anchorPos) {
+      case 'middle':
+        anchor = document.getElementById("anchor-middle");
+        document.getElementById("anchor-middle-wrapper").style.display = "block";
+        break;
+      case 'left':
+        anchor = document.getElementById("anchor-left");
+        document.getElementById("anchor-left-wrapper").style.display = "block";
+        break;
+      case 'right':
+        anchor = document.getElementById("anchor-right");
+        document.getElementById("anchor-right-wrapper").style.display = "block";
+        break;
+      default:
+        SimpleTest.ok(false, "Bad anchorPos: " + anchorPos);
+        runNextTest();
+        return;
+    }
+    try {
+      test(runNextTest);
+    } catch (ex) {
+      SimpleTest.ok(false, "sub-test " + anchorPos + "." + name + " failed: " + ex.toString() + "\n" + ex.stack);
+      runNextTest();
+    }
+  }
+  runNextTest();
+}
+
+SimpleTest.waitForExplicitFinish();
+
+addEventListener("load", function() {
+  // anchor is set by the test runner above
+  panel = document.getElementById("testPanel");
+
+  runTests();
+});
+
+]]>
+</script>
+
+<body xmlns="http://www.w3.org/1999/xhtml">
+<!-- Our tests assume at least 100px around the anchor on all sides, else the
+     panel may flip when we don't expect it to
+-->
+<div id="anchor-middle-wrapper" style="margin: 100px 100px 100px 100px;">
+  <p>The anchor --&gt; <span id="anchor-middle">v</span> &lt;--</p>
+</div>
+<div id="anchor-left-wrapper" style="text-align: left; display: none;">
+  <p><span id="anchor-left">v</span> &lt;-- The anchor;</p>
+</div>
+<div id="anchor-right-wrapper" style="text-align: right; display: none;">
+  <p>The anchor --&gt; <span id="anchor-right">v</span></p>
+</div>
+</body>
+
+</window>